Answered: Give the reason behind the followings:…

Engineering

Civil Engineering

Give the reason behind the followings: 1- All gases can be considered as compressible fluids.

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter18: Mathematics In Engineering

Section: Chapter Questions

Problem 32P

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Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.

Question

Give the reason behind the followings: 1- All gases can be considered as compressible fluids. 2- The force at a surface at rest with respect to the fluid must act normal to the surface. 3- Mercury is always used in the manometer. 4- Piczometers cannot be used to measure the vacuum (negative) pressures of liquids 5. The viscosity of all liquids decrease with increasing in temperature

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